Burst disaster warning system establishing method for barrier lake in data-lacking-area

An establishment method and technology without data, applied in the field of early warning system establishment of dammed lake outburst disaster in areas without data, to achieve the effects of enhanced applicability, smooth connection, and rapid and accurate information transmission

Inactive Publication Date: 2016-06-15
SICHUAN UNIV
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Problems solved by technology

[0020] Therefore, considering the necessity of non-engineering measures and the lack of a mature early warning system for barrier lake outburst disasters, a disaster early warning system is designed and constructed to predict disasters for barrier lakes in areas without data, so as to issue early warnings quickly and effectively The signal provides a strong basis for the decision-making department to customize the risk elimination or risk avoidance plan, guides the downstream residents to avoid risks, and is of great significance to protect the lives and property of the downstream people.

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  • Burst disaster warning system establishing method for barrier lake in data-lacking-area
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  • Burst disaster warning system establishing method for barrier lake in data-lacking-area

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Embodiment

[0046] Example: such as Figure 1 ~ Figure 2 As shown, the disaster early warning system of the present invention mainly includes four modules: flood forecasting, discharge flow planning, dam break flood evolution, and disaster early warning. Combined with the example of the barrier lake in the Guanmen Valley in the upper reaches of the Baisha River in Dujiangyan City, the specific implementation steps of the method are described as follows:

[0047] The first step is to collect the basic data of the corresponding watershed according to the regional location where the barrier lake is formed, including hydrometeorological data such as runoff, precipitation, and temperature, digital elevation data DEM, and land cover data. Using the hydrological analysis module of ArcGIS to extract the water system, the main steps are: first, extract the DEM of the research watershed according to the location of the watershed outlet; second, fill the DEM; third, use the non-depression DEM to ana...

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Abstract

The invention discloses a burst disaster warning system establishing method for a barrier lake in a data-lacking-area, and belongs to the technical field of disaster warning. The burst disaster warning system establishing method integrates four main processes, flood forecast, discharged flow drafting, dam bursting flood routing and disaster warning. The whole system is constructed as a complete platform, so that the process for inputting basic data and outputting warning signals can be realized, and flood forecast, dam bursting warning and flood routing can be carried out in the system. For calculation of the dam breach peak point flow, by means of deep research of a Xie Renzhi formula and integration with a physical model experiment, the soil coefficients and the flow coefficients for different ingredient barrier bodies can be obtained and the applicability of the formula to a barrier lake can be improved.

Description

technical field [0001] The invention belongs to the technical field of disaster early warning, and in particular relates to a method for establishing an early warning system for a dammed lake outburst disaster in an area without data. Background technique [0002] "Natural reservoirs" formed by landslides, collapses, or mud-rock flows blocking the flow of natural rivers are called barrier lakes. Its structure is loose, the composition is extremely uneven, the overall stability is poor, and it is easy to collapse due to instability, piping, and flooding. Most of the barrier lakes collapsed shortly after their formation, and overflow was the main form of collapse. [0003] The hazards caused by the collapse of the barrier lake are significant, mainly as follows: 1. The rapid discharge of the water body of the barrier lake causes flood disasters; After the dam broke, the flood water was released with sand and gravel, inducing mudslides. Therefore, once the barrier lake overf...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B31/00
CPCG08B21/10G08B31/00
Inventor 周宏伟梁煜峰周家文霍苗何丽君杨丰荣
Owner SICHUAN UNIV
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